all the heat is on top, roof exhaust is useful (air colled or water-cooling) GPU heat is
on top and front intake air is plowed straight to the CPU cooler stack. PSU wont
interfere with large CPU coolers. solid side-panel can be modded for large window.
HDD cages are reversable to have cables in rear.

just plying around... just looking for 15-25mm ontop for better clearance of radiators.

In an attempt to make my main rig smaller, I combined the 2 rigs in my sig and came up with this:

Everything fits perfectly fine, however as expected, it now runs very very hot.
My GPU is now idling at about 60 degrees.
Even my 2TB Hard Drive get hot to the touch.
As you can see in the picture, my 6950 has very little room to breath.

I was thinking of getting the Fractal Design Arc Mini to replace my core 1000.

How good is the Arc Mini in terms of GPU cooling?
Clearly the floor fan in my 690II was more useful than I thought!
Would this give me better cooling performance over my Core 1000?
I would be using the D14 over the C14 in the Arc Mini.

I was thinking of getting the Fractal Design Arc Mini to replace my core 1000.

How good is the Arc Mini in terms of GPU cooling?
Clearly the floor fan in my 690II was more useful than I thought!
Would this give me better cooling performance over my Core 1000?
I would be using the D14 over the C14 in the Arc Mini.

Thanks in advance.

That's what I did a while ago You're using a side panel fan on the Core 1000, yes? One thing you could try is getting better fans.

I'd say that GPU cooling is pretty good in Arc mini, with 2 Bitfenix Spectre pro's running @5v as front intakes my 7870 is idling at 15C over ambient, without either side panel or bottom fan. You can see pics of my hardware in both cases by clicking the link on my sig.